Me: “Would you like me to take the gift card for you? There’s nothing left on it.”

Customer: “No, I like to keep them on my desk.”

Me: “Okay…”

Customer: “I keep them on my desk because when I invite my friends over, I see who’s really my friend. If the gift card is still there when they leave, they are a true friend. If not, I know to have a shotgun waiting for them when they come back!”